MESON Chess Problem Database

Problem Display
PID: 48078 (k7/p1K4b/2p5/8/1P6/1Q6/8/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

k7/p1K4b/2p5/8/1P6/1Q6/8/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Qg8#
    • 1...Bc2
      • 2.Qg8#
    • 1...Bd3
      • 2.Qg8#
    • 1...Be4
      • 2.Qg8#
    • 1...Bg8
      • 2.Qxg8#
    • 1...c5
      • 2.Qd5#
  • Tries
    • 1.Qa4?
      • threat
        • 2.Qxc6#
      • 1...a5
        • 2.Qxa5#
      • 1...a6
        • 2.Qxa6#
      • 1...c5
        • 2.Qc6#
        • 2.Qe8#
      • 1...Be4!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qxc6#
      • 1...a5
        • 2.Qa6#
      • 1...a6
        • 2.Qxa6#
      • 1...Be4
        • 2.Qg8#
      • 1...c5
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::QAR(A)
    • B(c);N_GUARD::QAR(A),XB(c)
    • P(a);OGATEB::QAB(A)
  • Tries
    • Try
      • Q(A);P_PINP(b)
      • Threat
        • QAB(A),XP(a)
      • Vars
        • P(b);OGATEB::QAR(A),XP(b)
        • P(b);OGATEB::QAR2(A),XP(b)
      • Refutation
        • B(c);
  • Actual
    • Q(A);
    • Threat
      • QAB(A),XP(a)
    • Vars
      • P(b);OGATEB::QAR2(A)
      • P(b);OGATEB::QAR2(A),XP(b)
      • B(c);N_GUARD::QAR(A)
      • P(a);OGATEB::QAB(A)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).